Koff, chief scientific officer for IAVI, the International AIDS Vaccine Initiative.

韦恩是国际艾滋病疫苗行动组织（IAVI）的首席科学家。

Koff says initial vaccine candidates will probably be ready in three or four years.

韦恩说，中和抗体需要大约3到4年的时间与接受对象的免疫系统相适应。

Dr. Wayne Koff says the goal is to find a vaccine that will help the immune system fend off an HIV infection.

韦恩称，研究的目标是发现一种能够帮助人体免疫系统抵抗艾滋病感染的疫苗。